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{- This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at https://mozilla.org/MPL/2.0/. -}
{-# LANGUAGE OverloadedStrings #-}
module Language.GraphQL.ExecuteSpec
( spec
) where
import Control.Exception (SomeException)
import Data.Aeson ((.=))
import qualified Data.Aeson as Aeson
import Data.Conduit
import Data.HashMap.Strict (HashMap)
import qualified Data.HashMap.Strict as HashMap
import Language.GraphQL.AST (Name)
import Language.GraphQL.AST.Parser (document)
import Language.GraphQL.Error
import Language.GraphQL.Execute
import Language.GraphQL.Type as Type
import Language.GraphQL.Type.Out as Out
import Test.Hspec (Spec, context, describe, it, shouldBe)
import Text.Megaparsec (parse)
schema :: Schema (Either SomeException)
schema = Schema
{ query = queryType
, mutation = Nothing
, subscription = Just subscriptionType
}
queryType :: Out.ObjectType (Either SomeException)
queryType = Out.ObjectType "Query" Nothing []
$ HashMap.singleton "philosopher"
$ ValueResolver philosopherField
$ pure $ Type.Object mempty
where
philosopherField =
Out.Field Nothing (Out.NonNullObjectType philosopherType) HashMap.empty
philosopherType :: Out.ObjectType (Either SomeException)
philosopherType = Out.ObjectType "Philosopher" Nothing []
$ HashMap.fromList resolvers
where
resolvers =
[ ("firstName", ValueResolver firstNameField firstNameResolver)
, ("lastName", ValueResolver lastNameField lastNameResolver)
]
firstNameField =
Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
firstNameResolver = pure $ Type.String "Friedrich"
lastNameField
= Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
lastNameResolver = pure $ Type.String "Nietzsche"
subscriptionType :: Out.ObjectType (Either SomeException)
subscriptionType = Out.ObjectType "Subscription" Nothing []
$ HashMap.singleton "newQuote"
$ EventStreamResolver quoteField (pure $ Type.Object mempty)
$ pure $ yield $ Type.Object mempty
where
quoteField =
Out.Field Nothing (Out.NonNullObjectType quoteType) HashMap.empty
quoteType :: Out.ObjectType (Either SomeException)
quoteType = Out.ObjectType "Quote" Nothing []
$ HashMap.singleton "quote"
$ ValueResolver quoteField
$ pure "Naturam expelles furca, tamen usque recurret."
where
quoteField =
Out.Field Nothing (Out.NonNullScalarType string) HashMap.empty
spec :: Spec
spec =
describe "execute" $ do
context "Query" $ do
it "skips unknown fields" $
let data'' = Aeson.object
[ "philosopher" .= Aeson.object
[ "firstName" .= ("Friedrich" :: String)
]
]
expected = Response data'' mempty
execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
Right (Right actual) = either (pure . parseError) execute'
$ parse document "" "{ philosopher { firstName surname } }"
in actual `shouldBe` expected
it "merges selections" $
let data'' = Aeson.object
[ "philosopher" .= Aeson.object
[ "firstName" .= ("Friedrich" :: String)
, "lastName" .= ("Nietzsche" :: String)
]
]
expected = Response data'' mempty
execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
Right (Right actual) = either (pure . parseError) execute'
$ parse document "" "{ philosopher { firstName } philosopher { lastName } }"
in actual `shouldBe` expected
context "Subscription" $
it "subscribes" $
let data'' = Aeson.object
[ "newQuote" .= Aeson.object
[ "quote" .= ("Naturam expelles furca, tamen usque recurret." :: String)
]
]
expected = Response data'' mempty
execute' = execute schema Nothing (mempty :: HashMap Name Aeson.Value)
Right (Left stream) = either (pure . parseError) execute'
$ parse document "" "subscription { newQuote { quote } }"
Right (Just actual) = runConduit $ stream .| await
in actual `shouldBe` expected
|
